Cognitive stimulation therapy (CST)

Cognitive stimulation therapy, or CST, is a group program for people living with mild to moderate dementia. A small group meets twice a week for about seven weeks. They play word games, talk about news and old times, handle objects and share opinions, guided by a trained leader.^2,5

CST does not cure dementia or stop it. But it is one of the best-tested non-drug treatments for thinking and memory. It is also social and enjoyable, which matters a great deal for people who may feel left out of conversation. This page explains how CST works, what the research shows, and how to look for a group near you.

What CST is

CST was developed and tested in the United Kingdom.⁵ Its designers built on older approaches, such as reality orientation (gently reminding people of the date, place and news). Some sessions also use reminiscence (talking about the past). The program was then tested in a large trial.²

The goal is to keep the brain working in a relaxed, social setting. It is not a test or a class. Leaders ask for opinions, not "right answers." For example, when the group looks at photos of faces, the leader might ask "Who looks the youngest?" rather than "Who is this?"² This takes the pressure off and lets everyone join in, even people who have trouble finding words.

CST can be led by many kinds of staff who work with people with dementia. These include care workers, nurses, occupational therapists and psychologists. Groups meet in day centers, care homes and hospitals.⁵

Who CST is for

CST is meant for people with mild to moderate dementia.^1,5 In the original trial, people had scores of 10 to 24 on the Mini-Mental State Exam (MMSE), a common 30-point memory test. They also needed enough hearing, sight and language to take part in a group.² See memory and thinking tests for what these scores mean.

It may suit someone who:

• Is in the early stage or middle stage of dementia.
• Enjoys company, or used to, and has become quieter or withdrawn.
• Can sit with a group for about 45 minutes.
• Lives at home and goes to a day program, or lives in assisted living or a care home.

People with late-stage dementia usually find group CST too demanding. Other activities may fit better, such as music, touch, and simple sensory activities. See meaningful activities by stage and music and arts therapies.

Most CST research has been done with people who have Alzheimer's, vascular or mixed dementia. Researchers in the UK are now testing a video version adapted for rarer types: primary progressive aphasia, posterior cortical atrophy and the behavioral form of frontotemporal dementia. As of October 2026, results are not yet published.⁷

What a CST session looks like

The standard program has 14 sessions over 7 weeks, twice a week. In the first big trial, each session lasted 45 minutes and each group had five members.² Today's guidance says at least 14 sessions, usually twice weekly.⁵

Each session follows a similar shape, so people know what to expect:²

1. A gentle warm-up. The group starts with something light and not mentally hard, such as tossing a soft ball around the circle.
2. The orientation board. A board shows basic information such as the date and place, plus a name the group chose for itself. This gives a shared focus and helps people feel part of something.
3. The main activity. Each session has its own theme. The leader asks for opinions and adjusts the level so it is not too easy or too hard for that group.

Themes in the original program included childhood, food, famous faces, the present day, word games and using money.² Sessions that look back at the past are tied to the present day too, so they are not only reminiscence. Leaders also try to use the senses, such as sounds, smells and objects to hold.²

How well CST works

The first large trial

In 2003, a UK trial tested CST in 201 people with dementia in 18 care homes and 5 day centers. About half took part in CST groups. The rest kept their usual activities.²

After seven weeks, the CST group did better on two thinking tests and on a quality-of-life rating. For about every 6 people who took part, 1 person had a clear gain in thinking scores that they would not have had otherwise.² The authors noted this compared fairly well with trials of memory medicines, though those drug trials were longer and the two kinds of treatment are not the same.²

The big picture: a Cochrane review

A Cochrane review (an independent summary of all the good studies) was updated in 2023. It looked at 37 trials with 2,766 people with mild or moderate dementia. Their average age was about 79.³

Source for the table: Cochrane review, 2023.³

Results varied a lot from study to study. Groups that met twice a week or more, and people with mild dementia, seemed to gain more. The authors say to treat these patterns with care, because they came from comparing different studies.³

What this means in daily life. CST will not bring back lost memory. The thinking benefit is modest. But many families value a person who talks more, joins in more and seems more like themselves. That is where the evidence is strongest.

Keeping it going: maintenance CST

Seven weeks is a short time, and dementia keeps changing. So researchers created maintenance CST, a weekly group that continues after the first course.^4,8

In a 2014 UK trial, 236 people finished the standard 7-week CST course. Then half went on to 24 more weekly sessions. The other half went back to usual care.⁴

• People in the weekly group rated their own quality of life higher at six months.⁴
• Daily living skills were better at three months but not at six months.⁴
• Thinking test scores were not better overall. But among people also taking a cholinesterase inhibitor (a type of memory medicine such as donepezil), memory scores were better at both three and six months.⁴

The authors called the results encouraging but not conclusive.⁴ Learn more about donepezil, rivastigmine and galantamine.

Other ways to get CST

• Individual CST (iCST). A one-to-one version, with a manual written for carers. A family member or a health worker can lead it at home.^5,8 Far fewer studies have tested it than group CST.³ It may help if someone cannot get to a group or does not like groups.
• Virtual CST. Groups that meet by video were developed during the COVID-19 pandemic. A framework has been field-tested in several countries, and it follows the same principles as in-person CST.⁷ Some people find video tiring or confusing, so in-person groups may work better for many.
• Translated programs. CST manuals exist in several languages, including Chinese, Danish, German, Italian, Norwegian and Russian.⁸ As of October 2026, CST work is underway in 43 countries.⁵

How to find a CST program in the United States

CST is widely used in the UK, where some public memory services offer it. In the United States it is much less common.⁵ The international CST center at University College London lists a few U.S. groups, including a North American CST training center at Saint Louis University in Missouri.⁶

Here are places to ask:

1. Your doctor or memory clinic. Ask, "Do you know of any cognitive stimulation therapy groups near us?" Some clinics run groups or know who does. See which specialist to see.
2. Adult day centers. Some use CST or similar group programs. Ask whether the staff were trained in CST, how many sessions there are, and how big the groups are. See adult day care.
3. Assisted living and memory care homes. Ask the activities director if they use a CST program.
4. The Alzheimer's Association 24/7 Helpline: 1-800-272-3900. It is free, and staff can help you find local programs in more than 200 languages.⁹
5. The Eldercare Locator: 1-800-677-1116. This free service from the federal government connects you with your local Area Agency on Aging.¹⁰
6. Occupational therapists and speech therapists. Some offer cognitive stimulation as part of therapy. Ask about cost and insurance before starting.

Be careful with programs that promise to "reverse" or "stop" dementia. CST is a helpful activity with modest benefits, not a cure.

If you cannot find a CST group

You can still use some CST ideas at home. These are not the same as a real CST program, but they follow the same spirit:²

• Ask for opinions, not facts. "Which of these two pictures do you like better?" works better than "What year was this?"
• Mix the past with the present. Look at old photos, then talk about how things are different today.
• Use the senses. Smell spices, listen to favorite songs, sort coins or buttons.
• Keep a routine. Same time, same place, a simple opening ritual.
• Never quiz or correct. If a memory is wrong, let it go. The point is connection.

Our pages on reminiscence and life review, talking with someone who has dementia and building a daily routine have more ideas. The memory notebook can help, too.

Common questions

Does CST replace dementia medicines?

No. CST is used alongside medicines, not instead of them. In the trials, many people were also taking memory medicines.^2,4 Talk with your doctor or pharmacist before changing anything.

My mother says she "doesn't do groups." Is it worth trying?

Many people feel shy at first. CST is designed to be low-pressure, with no right or wrong answers.² Try a few sessions. If she still dislikes it, one-to-one CST or other activities may fit better.

Is CST the same as reminiscence therapy?

No, but they overlap. Reminiscence is about remembering the past. CST uses some reminiscence but also includes current events, word and number games, and other mental activities.² NICE suggests that group reminiscence therapy is also worth considering.¹

Does Medicare pay for CST?

Coverage depends on who offers it and how. Some programs are free through community groups. Others are part of occupational therapy, speech therapy or an adult day program. Ask the provider whether it is covered, how they bill and what you will pay. See what Medicare covers in dementia.

Can CST help with mood or behavior?

The Cochrane review found slight improvements in mood and distress for some people.³ For new or sudden changes in mood or behavior, see a doctor. Pain, infection or medicine side effects are common causes. See apathy and depression in dementia.

Education only. This page is general information written from the sources listed. It is not medical, legal or financial advice and does not replace a doctor, therapist or lawyer who knows your situation. How we write and check pages.